Римлянам 13:12

The night--of evil is far spent, the day--of consummated triumph over it is at hand: let us therefore cast off--as a dress the works of darkness--all works holding of the kingdom and period of darkness, with which, as followers of the risen Saviour, our connection has been dissolved. and let us put on the armour of light--described at length in Eph 6:11-18.

There are three good lessons taught us in this chapter, where the apostle enlarges more upon his precepts than he had done in the foregoing chapter, finding them more needful to be fully pressed. I. A lesson of subjection to lawful authority (Rom 13:1-6). II. A lesson of justice and love to our brethren (Rom 13:7-10). III. A lesson of sobriety and godliness in ourselves (Rom 13:11 to the end).

13:12-13 the day of salvation: The word day reflects two sources. First, the Old Testament repeatedly predicts the day of the Lord when God’s plan culminates (see Isa 13:4-13; Jer 3:18; 30:8-9; Joel 2:1-32; Obad 1:15-18). Second, the tradition of moral instruction in the ancient world associated light/daytime with good and darkness/nighttime with evil. The Greeks, Romans, and Jews all used this contrast. Because believers belong to the day they should be living out its values, avoiding the dark deeds that are typical of nighttime.